Cultural Revolution – How to Manage the Change Docker Brings

Ian MiellAuthor of 'Docker in Practice'

—Dr. Spock

“Trust yourself. You know more than you think.”

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Agenda

OutcomesDevOps CultureQuality ImprovementsEfficiencies…Profit

BackgroundThe ProblemEnter Docker

Four Choices1) Project/Skunkworks2) Microservices/Monolith3) Standard Tools/Not Invented Here4) Secret/Open

DevOps CultureQuality ImprovementsEfficiencies…Profit

Local Problems, Local Solutions

Conclusion

BackgroundWhy Docker?

5

The Wrong Number of Customers for DevOps

2 25 20000000

25

50

75

100

Number of customers

DevO

ps Q

uotie

nt

6

Environments

Customer

Prototype

1) Project or Skunkworks? Project

Structure Funding

Skunkworks Motivated Fun Democratic Frictionless

Erlang – proto-Docker architecture?

2) Microservices or Monolith?

Microservices Cleaner Forces better design

Monolith Convenient for legacy Quicker to implement Simpler to reason

Erlang – History Repeating Itself?

Three Stages

Build Monolith Devops Workflow Break up Microservices ... Profit

3) Standard Tools vs NIH

Standard Tools Standard, well supported (mostly) Proven

Not Invented Here Fast Feature-sufficient Investment deferred

4) Secret or Open?

Secret Control Focus

Open Risk of 'death by bikeshedding' Cultivate buy-in and reap benefits

"Most managers seem to feel that training employees is a job that should be left to

others. I, on the other hand, strongly believe that the

manager should do it himself."

Andy Grove, Intel

How you see your organisation

How you see other organisations

What Happened Next?

Three Benefits (of Many!)

Facilitated DevOps Culture Improved quality More efficient hardware usage

Before Docker and After

Phoenix Deployment Example:themortgagemeter.comDemo

Iterate Earlier in the Cycle...

...and Customer Sees

CI Server Before

CI Server After

Distributed CI with Docker and Jenkins Swarm

Profit?

—Dr. Spock

“Trust yourself. You know more than you think.”

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Thank you!Ian Miell@ianmiellian.miell@gmail.comhttp://zwischenzugs.wordpress.com